Frequencies for first 10,000 rows of pct012f187 variable in sf12000860us21 dataset :

   80 years |      Freq.     Percent        Cum.
------------+-----------------------------------
          0 |      9,349       93.49       93.49
          1 |        346        3.46       96.95
          2 |        111        1.11       98.06
          3 |         52        0.52       98.58
          4 |         38        0.38       98.96
          5 |         21        0.21       99.17
          6 |         11        0.11       99.28
          7 |         12        0.12       99.40
          8 |          6        0.06       99.46
          9 |          9        0.09       99.55
         10 |          5        0.05       99.60
         11 |          7        0.07       99.67
         12 |          4        0.04       99.71
         13 |          3        0.03       99.74
         14 |          1        0.01       99.75
         15 |          5        0.05       99.80
         16 |          3        0.03       99.83
         17 |          4        0.04       99.87
         18 |          1        0.01       99.88
         19 |          2        0.02       99.90
         20 |          3        0.03       99.93
         24 |          2        0.02       99.95
         25 |          1        0.01       99.96
         26 |          1        0.01       99.97
         27 |          1        0.01       99.98
         29 |          1        0.01       99.99
         33 |          1        0.01      100.00
------------+-----------------------------------
      Total |     10,000      100.00

by Jean Roth , jroth@nber.org , 17 Apr 2017